Weather Alerts for Lower Columbia

Issued by the National Weather Service

Air Stagnation Advisory  AIR STAGNATION ADVISORY   Air Stagnation Advisory
LOWER COLUMBIA

Areas Affected:
Lower Columbia and I - 5 Corridor in Cowlitz County
Effective: Sat, 12/9 1:34pm Updated: Mon, 12/11 2:36am Urgency: Expected
Expires: Thu, 12/14 2:00pm Severity: Minor Certainty: Likely

 
Details:
...STAGNANT AIR CONDITIONS EXPECTED INTO NEXT WEEK...
...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST
THURSDAY...
* AIR QUALITY...Air quality may deteriorate due to an extended
period of stagnant air conditions.
* TIMING...through Thursday afternoon.
* LOCATIONS...The Lower Columbia and I-5 Corridor in Cowlitz
County
* IMPACTS...Limited ventilation may result in deteriorating air
quality.

Information:
An Air Stagnation Advisory indicates that due to limited movement
of an air mass across the advisory area, pollution will increase
to dangerous levels. Persons with respiratory illness should
follow their physicians advice for dealing with high levels of
air pollution.